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Finding the Fourth Proportional to 818.27, 1,226.18 and 453.17

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Solution

The fourth proportional to 818.27, 1,226.18 and 453.17 is: 679.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    818.27 : 1,226.18 = 453.17 : x
  2. Step 2: Convert to fraction form
    818.27/1,226.18 = 453.17/x
  3. Step 3: Cross multiply
    818.27x = 1,226.18 × 453.17
  4. Step 4: Simplify right side
    818.27x = 555,659.59
  5. Step 5: Solve for x
    x = 555,659.59/818.27
  6. Step 6: Final answer
    x = 679.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.